memcached session in symfony

方法1：

If you use the full stack Symfony framework, than configuring memcached as a session handler is as simple as specifying it in your php.ini:

session.save_handler=memcached
session.save_path=localhost:11211

Make sure that the handler_id is set to null (~) in your app/config/config.yml. This way Symfony will use the native php handler:

framework:
    session:
        # handler_id set to null will use default session handler from php.ini
        handler_id:  ~

Now you can start using your session. It is going to be stored in memcached.

Accessing the session

Session can be accessed from the Request object:

$request->getSession()->set('name', 'Kuba');

HttpFoundation component

The same can be set up outside of a full stack framework with the HttpFoundation component alone:

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Session\Session;
use Symfony\Component\HttpFoundation\Session\Attribute\NamespacedAttributeBag;
use Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage;

$storage = new NativeSessionStorage(array());
$session = new Session($storage, new NamespacedAttributeBag());

$request = Request::createFromGlobals();
$request->setSession($session);

The above snippet sets the session up just like the full stack framework does (by default). This way, the script you'll put this code in, will share the session with a full Symfony application.

 

方法2：https://gist.github.com/K-Phoen/4327229

Storing Symfony2 sessions in memcached

Raw

 config.yml

	imports:
	# ....
	- { resource: services/session.yml }
	framework:
	# ....
	session:
	handler_id: session.handler.memcached

Raw

 gistfile1.txt

aptitude install memcached php5-memcached

Raw

 parameters.yml

	parameters:
	# ...
	session_memcached_host: localhost
	session_memcached_port: 11211
	session_memcached_prefix: sess
	session_memcached_expire: 3600

Raw

 session_services.yml

	services:
	session.memcached:
	class: Memcached
	arguments:
	persistent_id: %session_memcached_prefix%
	calls:
	- [ addServer, [ %session_memcached_host%, %session_memcached_port% ]]
	session.handler.memcached:
	class: Symfony\Component\HttpFoundation\Session\Storage\Handler\MemcachedSessionHandler
	arguments: [@session.memcached, { prefix: %session_memcached_prefix%, expiretime: %session_memcached_expire% }]   方法3：https://gist.github.com/benr77/258e42642b4632d5a826#file-memcachedwrapper-php Memcached wrapper for persistent connections Raw  MemcachedWrapper.php   <?php       namespace ChaletOps\BaseBundle\Utils;       /**   * Class MemcachedWrapper   */   class MemcachedWrapper extends \Memcached   {       /**   * @param string $persistentId   */   public function __construct($persistentId)   {   parent::__construct($persistentId);   }       /**   * Prevent adding of new servers as duplicates. We're persistent!   *   * @param array $servers   *   * @return bool   */   public function addServers(array $servers)   {   if (0 == count($this->getServerList()))   {   return parent::addServers($servers);   }       return false;   }       /**   * Prevent adding of new server as duplicate. We're persistent!   *   * @param string $host   * @param int $port   * @param int $weight   *   * @return bool   */   public function addServer($host, $port, $weight = 0)   {   foreach ($this->getServerList() as $server)   {   if ($server['host'] == $host && $server['port'] == $port)   {   return false;   }   }       return parent::addServer($host, $port, $weight);   }       }     方法4：https://gist.github.com/elmariachi111/5637669a028c29e3973a Symfony2 Memcached settings for persistent connections Raw  AcmeMemcached.php   <?php       namespace Acme\CoreBundle\Classes\Cache;           class AcmeMemcached extends \Memcached {           function __construct($persistent_id)   {   parent::__construct($persistent_id);   }       /**   * prevent adding of new servers. We're persistent!   */   public function addServers(array $servers)   {   if (0 == count($this->getServerList())) {   parent::addServers($servers);   }   }           } Raw  config(prod).yml   services:   memcache.servers:   class: Acme\CoreBundle\Classes\Cache\AcmeMemcached   arguments: [ "acme_mc" ] #persistent id   calls:   - [ addServers, [ [ ["10.0.0.1",11211, 50 ], ["10.0.0.2",11211,25], ["10.0.0.3",11211,25] ] ] ] adamquaile commented on 8 Jul 2015 I know this is old, but for anyone stumbling across this. Just be aware there is also a singular addServer method you may want to override too. Otherwise it's still possible to end up with multiple open connections. benr77 commented on 29 Jul 2015 I've added the method for addServer as well - see my Gist based on this one. https://gist.github.com/benr77/258e42642b4632d5a826#file-memcachedwrapper-php